hi jordan
chris is correct. if you really want to drill them out there are bits available that will work with spring steel. i was working on a roll machine in a local paper mill and had to drill and tap into the gear cases. we had to order special bits to do the drilling. now, i'm not sure what the difference is on the brinnel scale between spring steel, and ht forged steel, but i will tell you that ordinary steel bits wouldn't even scratch the surface of these cases. i would suggest you contact your local supply house and ask them for an option. another point, i have used bits by several manufacturer's, and i have found that bits made by skf seem to work best, and last longer. mike
|
21-03-07, 18:39
Threaded Mode